Question

which best describes a reason that consumer demand can change?
loss of income
loss of supply
distribution problems
market problems

Explanation:

A change in consumer demand can occur due to a loss of income. When consumers have less money, they may reduce their demand for goods and services. Market problems, distribution problems, and loss of supply are not as directly related to consumer - side demand changes due to personal financial status as loss of income.

Answer:

loss of income